JP2005120671A - Sound insulating wall made of frp, and construction method therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sound insulating wall using fiber-reinforced plastics, which dispenses with maintenance inspection of a fastening part, which simplifies positioning in construction and which reduces both mounting construction costs and the cost of a sound insulating wall material, and to provide a construction method for the sound insulating wall. <P>SOLUTION: This sound insulating wall, which is composed of the fiber-reinforced plastics and which has a sound insulating plate and a mounting part for the sound insulating plate, is characterized in that the mounting part of the sound insulating plate is provided in the inside part and/or outside part of the sound insulating plate and has a hollow part. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a soundproof wall made of fiber reinforced plastic (FRP), which is used as a soundproof wall provided along a railway line or a road, for example, and an improvement of the construction method.

  Conventionally, for example, concrete and steel metal soundproof walls have been installed on railroads and roads on flat ground and elevated sections, as is well known, for the purpose of mitigating noise to residents along the railway. Since these materials are relatively heavy objects, the principle of sound insulation due to the large mass has given a certain effect in the prevention of noise generated from railway vehicles and automobiles and the diffusion of noise. In a concrete soundproof wall, as is well known, there is a risk of rusting and expanding the reinforcing steel bars due to the neutralization of the concrete, causing cracks on the concrete surface and peeling off.

  Recently, as a method of preventing concrete from peeling off, glass molds made of glass fiber reinforced plastic are used instead of conventional steel or wooden formwork, and the formwork remains even after placing concrete on site. A construction method has been proposed (see, for example, Patent Document 1). The purpose of these proposed noise barriers is the disadvantage of conventional cast-in-place concrete noise barriers, the need for scaffolds for a long period of time, the increased number of molds and cost, and the neutralization of cracks. Emphasis is placed on improving the problems such as the occurrence of coloration and the difficulty of coloring and pattern construction.

  On the other hand, regarding the strength against the required wind load, the soundproof wall described in Patent Document 1 and the like has a structure that reinforced concrete bears like the conventional soundproof wall made of cast-in-place concrete. As usual, the weight was heavy and the burden on the frame was heavy. On the other hand, recently, an example in which a soundproof wall using a lighter material such as a fiber reinforced plastic has been adopted has increased (for example, see Patent Document 2).

  In the soundproof wall as proposed in Patent Document 2, the panel portion is a structural member made of fiber reinforced plastic that can withstand wind pressure, so it is very lightweight and can reduce the burden on the housing. it can.

However, the soundproof wall using the fiber reinforced plastic is structured to be fastened with a nut to a U bolt or anchor bolt previously embedded in a concrete structure via a mounting portion provided at the lower part of the soundproof wall panel. A large bending moment acts on the mounting portion provided at the lower portion of the soundproof wall panel due to wind pressure as compared with other portions. Therefore, stress concentration occurs in the vicinity of the mounting hole, so that the hole diameter cannot be made extremely large and it is difficult to adjust the position. Further, in the vicinity of the mounting portion where a large bending moment acts, it is necessary to use a metal material having particularly high strength and rigidity in order to maintain the necessary bending strength and bending rigidity against the wind pressure.
Japanese Patent Laid-Open No. 06-313304 JP 2002-087721 A

  The object of the present invention is to solve the conventional problems as described above, and to provide a fiber reinforced plastic that requires no maintenance inspection of the fastening portion, is easy to adjust the position at the time of construction, and is inexpensive in both installation work cost and soundproof wall material cost. The object is to provide a soundproof wall and its construction method.

In order to solve the above problems, the present invention employs the following configuration. That is,
(1) In a soundproof wall made of fiber reinforced plastic, having a soundproof plate and a soundproof plate mounting portion, the soundproof plate mounting portion is provided on the inner side and / or the outer side of the soundproof plate, and A soundproof wall having a hollow portion inside.

  (2) The soundproof wall according to (1), wherein an inner surface of the mounting portion is made of an inorganic material or an organic material.

  (3) The soundproof wall according to (1) or (2), wherein a retaining portion is provided on an inner surface of the attachment portion.

  (4) In any one of the above (1) to (3), the retaining portion is selected from at least one of the following (A) to (D): The sound barrier described.

(A) Means constituted by the presence of convex portions and / or concave portions (B) There is a portion where the horizontal cross-sectional area in the upper vertical direction of the inner surface of the mounting portion is larger than the horizontal cross-sectional area in the lower vertical direction (C) Means constituted by a connecting member whose both ends are coupled to the inner surface of the mounting portion. (D) The inner surface of the mounting portion has a curved portion and / or a bent portion. Means Constructed (5) A fiber having a soundproof plate and a mounting portion for the soundproof plate, the mounting portion being provided on the inner side and / or the outer side of the soundproof plate, and having a hollow portion therein In the method of constructing a soundproof wall made of reinforced plastic, the cavity is inserted into a joining member provided in a concrete structure, and then the cavity is filled with concrete and / or mortar. A construction method of a soundproof wall characterized by fixing the soundproof wall by filling.

  (6) The construction method of the soundproof wall according to (5), wherein a reinforcing bar for concrete is used as the joining member.

  (7) The method for constructing a soundproof wall according to (6), wherein a reinforcing bar made of metal or fiber reinforced plastic is used as the reinforcing bar for concrete.

  (8) The construction method of the soundproof wall according to any one of (5) to (7), wherein an anchor is used as the joining member.

  According to the soundproof wall of the present invention, it is possible to make a large gap between the joining member embedded and standing in the concrete structure and the cavity, and the position can be easily adjusted, so that the construction cost can be reduced.

  In addition, since the structure can be simplified, the production cost can be reduced.

  As described above, the soundproof wall of the present invention includes a soundproof wall made of fiber reinforced plastic, which includes a soundproof plate and a mounting portion, and the mounting portion is provided on the inner side and / or the outer side of the soundproof plate, and the inside thereof. It is characterized by having a hollow portion. In addition, after the cavity is embedded in a concrete structure in advance so as to surround the standing joint member, the cavity is filled with both concrete and / or mortar, and the soundproof wall is provided to the concrete structure. By adopting the construction method for fixing the gap, the gap between the cavity and the joining member can be made large, so that there is an advantage that the position can be easily adjusted. Moreover, it can prevent from removing from a concrete structure by devising various shapes of the inner surface of the said attachment part.

  According to the soundproof wall and construction method of the said structure, it is not necessary to set it as the attachment part using the above-mentioned special material of the mechanical characteristic.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described with reference to the drawings of an example.

  FIG. 1 is an overall perspective view of a fiber reinforced plastic sound barrier 1 according to an embodiment of the present invention. FIG. 2 is a partially exploded view showing an example of the mounting structure.

  In FIG. 1, a soundproof wall 1 of the present invention has a soundproof plate 2 and a mounting portion 3 having a hollow portion P.

  As shown in FIG. 2, the soundproof wall 1 according to the present invention is constructed by inserting a mounting portion 3 having a cavity portion P into a joint member 5 that has been embedded and raised in advance in a concrete structure 13 and then inserting concrete into the cavity portion P. It can be fixed by filling 4.

(1) Positional relationship between the soundproof plate and the mounting portion The mounting portion 3 having the hollow portion P filled with the concrete 4 provided on the fiber reinforced plastic soundproof wall 1 of the present invention is shown in FIGS. 5, 6 and 7 may be provided on the outer side of the soundproof plate 2, or may be provided on the inner side of the soundproof plate 2 as shown in FIGS. You may provide in both inside.

  Moreover, the attachment part 3 may be provided up to the same height as the soundproof plate 2 in the height direction, or may be halfway.

  As shown in FIGS. 3 and 4, when the soundproof plate 2 has a structure made of a single plate 6, the mounting portion 3 can be provided outside the soundproof plate 2.

  The soundproof plate 2 is formed of a fiber reinforced plastic having both high strength and rigidity, and may have a structure of a single plate 6 made of fiber reinforced plastic as shown in FIG. 3, or as shown in FIG. Alternatively, a structure composed of a single plate 6 made of fiber reinforced plastic and a rib 7 may be used. Further, as shown in FIG. 5, the soundproof plate 2 may have a sandwich structure composed of a core material 9 and skin materials 8 a and 8 b made of fiber reinforced plastic located on both sides of the core material 9. As shown, a sandwich structure composed of a core material 9, skin materials 8a and 8b made of fiber reinforced plastic located on both sides of the core material 9, and a web 10 connecting the skin materials 8a and 8b may be used. When the soundproof plate 2 has a sandwich structure composed of the core material 9 and the skin materials 8a and 8b located on both sides of the core material 9, the mounting portion 3 is disposed on the outer side of the soundproof plate 2 as shown in FIGS. Alternatively, as shown in FIG. 9, a part of the core material 9 on the inner side of the soundproof plate 2 may be removed so that a hollow portion exists. When the soundproof plate 2 has a hollow structure, the attachment portion 3 may be provided on the outer side of the soundproof plate 2 as shown in FIG. 7, or the attachment portion 3 is attached to the soundproof plate 2 as shown in FIG. 8. You may provide in an inner part.

  Both the rib 7 and the web 10 are provided to increase the bending strength and rigidity of the soundproof plate 2, and can be provided in the horizontal direction and / or the vertical direction as appropriate depending on the required strength and rigidity. . The material of the rib 7 and the web 10 is not particularly limited, but it is important that the rib 7 and the web 10 are completely integrated with the veneer 6 and the skin materials 8a and 8b, respectively, in order to fully exhibit their functions. is there. Therefore, it is preferable that the material of the rib 7 and the web 10 is a material that can be easily joined by means that can be continuously joined to the veneer 6 and the skin materials 8a and 8b, respectively.

(2) Alkali resistance measures on the inner surface of the mounting portion Since the mounting frame 11 constituting the mounting portion 3 is filled with concrete, the mounting frame 11 is made of a material that can withstand the strong alkalinity (ph12 to 13) of the concrete for a long time. It is preferable that it consists of a thing, and it is especially preferable that it consists of either an inorganic material or an organic material. As the inorganic material, metals such as steel, stainless steel, and aluminum, ceramics such as alumina and silicon carbide, carbides such as graphite and carbon black, and the like can be used. In the case of steel, it is preferable to apply a surface treatment such as hot dip galvanizing as a countermeasure against rust.

  As the organic material, a synthetic resin or the like can be used. In the case of a synthetic resin, a resin having an ester bond or an amide bond produced by condensation polymerization is hydrolyzed and eroded by alkalinity. It is preferable to use polypropylene or the like.

  Further, in order to improve the alkali resistance of the concrete-filled portion, as shown in FIGS. 10, 11, and 12, an insert member 12 that can withstand strong alkali is separately provided on the inner surface of the mounting frame 11, and the inner surface is the insert member 12. It may have a structure to cover.

The insert member 12 is preferably made of either an inorganic material or an organic material. As the inorganic material, metals such as steel, stainless steel and aluminum, ceramics such as alumina and silicon carbide, carbides such as graphite and carbon black, and the like can be used. In the case of steel, it is preferable to apply a surface treatment such as hot dip galvanization as a measure against rust. As the organic material, a synthetic resin or the like can be used.
For the same reason, the organic material is preferably a resin having no ester bond or amide bond, and fluororesin, polyethylene, polypropylene, or the like can be used.

(3) Structure for preventing retaining portion of attachment portion Further, the attachment portion 3 is provided with at least one means selected from the following first means to fourth means, so that the soundproof wall 1 is caused by unexpected wind pressure or the like after installation. It is preferable to provide a means for preventing the vertical escape.

  The first means is to provide a convex portion 14 as shown in FIG. 13 on the inner surface of the mounting frame 11 constituting the mounting portion 3 or the inner surface of the insert member 12, or as shown in FIG. It is a means to provide, or a means to provide both the convex part 14 and the recessed part 15. FIG. The convex portion 14 and / or the concave portion 15 can provide a sufficient anchor effect (hook) to the concrete to be filled. In order to obtain a sufficient anchor effect, the height of the convex portion 14 and / or the concave portion 15 is preferably 0.5 mm or more. Although the upper limit value of the height of the convex portion 14 is not particularly limited, the clearance between the cavity portion P of the attachment portion 3 and the joint member 5 embedded and raised in the concrete structure 13 is secured to some extent, and the adjustment allowance is reduced. Since it is necessary to take, it is preferable that it is 100 mm or less. The height of the recess 15 is not limited because it does not affect the adjustment allowance during installation.

  As shown in FIG. 15, the second means is a means for providing a portion of the inner surface of the mounting portion 3 where the horizontal cross-sectional area S1 in the upper vertical direction is larger than the horizontal cross-sectional area S2 in the lower vertical direction. As a result, the attachment portion 3 cannot move upward in the vertical direction and can be prevented from coming off.

As shown in FIGS. 16 and 17, the third means is a means for providing connecting members 16 a and 16 b whose both ends are coupled to the inner surface of the mounting portion 3.
Thereby, connecting member 16a, 16b is caught in the concrete with which the cavity P of the attaching part 3 was filled, and it can prevent removal | extraction.

  The fourth means is a means for providing a curved portion on the inner surface of the mounting portion 3 as shown in FIGS. 18 and 19, or a bent portion is provided on the inner surface of the mounting portion 3 as shown in FIGS. Means or means for providing both a curved portion and a bent portion.

  As shown in FIGS. 20 and 21, the bent portion has a bent point, and the bent point is any one of a discontinuous point between a straight line and a straight line, a discontinuous point between a straight line and a curved line, and a discontinuous point between a curved line and a curved line. May be. Thereby, the inner surface of the attachment portion 3 is caught by the concrete filled in the cavity portion P of the attachment portion 3 and can be prevented from coming off.

(4) Joining method of soundproof plate and mounting portion In FIG. 2, the mounting frame 11 constituting the mounting portion 3 serves to transmit the wind pressure received by the soundproofing plate 2 to the concrete 4 filled in the mounting frame 11. Fulfill. The material of the mounting frame 11 is not particularly limited, but is connected to the single plate 6 and the skin material 8b constituting the soundproofing part 2 by a member having sufficient strength in order to fully exhibit the function. This is very important.

  Therefore, the material of the mounting frame 11 is preferably a means that can be continuously joined to the veneer 6 and the skin material 8b, such as adhesion, or a material that can be mechanically easily joined by bolts and nuts.

  In the present embodiment, the mounting frame 11 and the single plate 6, and the mounting frame 11 and the skin material 8b are made of fiber reinforced plastic using the same matrix resin. It is assumed that it is completely integrated into

(5) Structure of soundproof plate The core material 9 in FIGS. 5, 6, and 9 serves as a spacer for ensuring bending rigidity, and may be anything as long as it is lightweight. For example, urethane foam, polyethylene Organic foams such as foam, inorganic foams such as calcium silicate and foamed concrete, wood, or honeycomb materials can be used.

  As the reinforcing fiber of the fiber reinforced plastic used for the veneer 6 and the skin materials 8a and 8b, inorganic fiber made of glass, carbon fiber, etc., aramid, polyamide, polyester fiber, etc., as appropriate, depending on the application and use conditions Organic fiber or the like can be used. Moreover, as a form of the fiber to be used, for example, a short fiber or mat having a fiber length of 1 to 50 mm, a cloth made of continuous fiber, a strand, or the like can be preferably used.

Here, in order to obtain a lightweight and high-strength fiber reinforced resin, carbon fiber is most preferable, but in order to balance with cost, a glass fiber / carbon fiber hybrid is also preferable.
Incorporation of carbon fiber improves vibration damping and is particularly suitable for use in railway viaducts. Further, any carbon fiber may be used in consideration of the high strength and rigidity of the carbon fiber, but it is most preferable to use a so-called large tow carbon fiber for further cost reduction. For example, the number of filaments of one carbon fiber yarn is not less than the usual 10,000, but is in the range of 10,000 to 300,000, more preferably in the range of 50,000 to 150,000. It is preferable to use a carbon fiber filament yarn in the form of a resin because it is more excellent in resin impregnation property, handling property as a reinforcing fiber base material, and economical efficiency of the reinforcing fiber base material. In addition, if necessary or according to required mechanical properties, a reinforcing fiber base is formed by laminating a plurality of layers of reinforcing fibers, and the reinforcing fiber base is impregnated with a resin. In the reinforcing fiber layer to be laminated, a fiber layer or a woven fabric layer arranged in one direction can be appropriately laminated, and the fiber orientation direction can also be appropriately selected according to the required strength direction.

  Next, as the matrix resin of the fiber reinforced plastic portion, for example, thermoplastic resin such as polyethylene, polypropylene, nylon, ABS resin, PEEK (polyether ether ketone), polyimide, or epoxy resin, unsaturated polyester resin, vinyl Thermosetting resins such as ester resins and phenol resins can be used. In the resin, layered compounds (for example, mica, molybdenum disulfide, boron nitride, etc.), acicular compounds (for example, zonotlite, potassium titanate, carbon fiber, etc.), granular and plate-like compounds (for example, ferrite, talc, By adding clay, etc., conversion to frictional heat is performed by the mutual movement of inorganic crystals or between the inorganic substance and the matrix, and by filling the filler, the elastic modulus and density are increased, and resistance to vibration is increased. Since the damping characteristics are improved, it is possible to reduce the resonance of the soundproof panel itself due to vibration of the viaduct during train operation and vibration on the road bridge girder.

  Also, for example, it is preferable to add an inorganic flame retardant such as aluminum hydroxide or a flame retardant such as phosphorus, bromine or chlorine to improve the flame retardancy. Of these, phenol resins are preferably used because they are excellent in flame retardancy and are inexpensive.

  In particular, when a phenol resin is used, excellent fire resistance is obtained, which is preferable. These additives are not always necessary because the matrix resin itself has some vibration suppression and self-extinguishing (flame retardant) functions. What is necessary is just to select suitably according to the conditions of these.

The soundproofing plate 2 made of the fiber reinforced plastic is made of vacuum, blow, injection, stamping, BMC (Bulk) by a matrix resin or by a form of a reinforcing fiber.
It can be easily formed using various molding methods such as Molding Compounds, SMC (Sheet Molding Compounds), transfer, RTM (Resin Transfer Molding), press, drawing, and hand lay-up molding.

  The former is often used in combination of a short fiber substrate and a thermoplastic resin or a thermosetting resin. Although the strength and rigidity are slightly low due to the short fiber, the molding cycle is short and the manufacturing cost is short. Is a method that is often used because it is inexpensive and can easily form a reinforcing rib for a structure having a function as a structure, and is superior in strength and rigidity to a single plastic. Are suitable.

  The latter is often used in a combination of a long fiber base material and a thermosetting resin, and it is possible to form reinforcing ribs as described above. In particular, vacuum injection impregnation molding, which is a simple RTM, has the advantage that the volume content of the reinforcing fiber substrate can be increased, and a material having high strength and rigidity can be produced at a relatively low cost.

(6) Construction method In the installation, the joining member 5 is embedded in the concrete structure 13 in advance and stood up. It is important that the joining member 5 is made of a material that can transmit the wind pressure received by the soundproof wall 1 to the concrete structure 13, and as shown in FIG. 23, reinforcing bars 17 used to reinforce the concrete as shown in FIG. Any anchor 18 is preferred.

  The reinforcing bars 17 are preferably made of metal such as iron or stainless steel or fiber reinforced plastic. For the anchor 18, an anchor bolt, a normal bolt, a U-type bolt, or the like can be used.

  In actual installation, a plurality of fiber reinforced plastic sound barriers 1 are provided in the horizontal direction to form a continuous sound barrier.

  At this time, the external dimensions of the integrated fiber reinforced plastic soundproof wall 1 depend on the application, but when used as a rail in a railway viaduct, the vertical dimension (height) H shown in FIG. 1 is 500 to 3000 mm. The horizontal dimension (width) W can be integrated up to a maximum of about 25 m (when it exceeds that, it becomes difficult to carry in dimension), and when connecting relatively small ones, the horizontal dimension W is 500 to 2000 mm. The depth D is preferably in the range of 80 to 300 mm from the viewpoint of the workability of the installation work.

  When the lateral dimension W is relatively large, at least a part of the soundproof wall can be formed in a shape curved along a curvature such as a viaduct, and the soundproof wall can be configured to have a curved surface portion.

  The soundproof wall shown in FIG. 11 is impregnated with resin by a hand lay-up molding method using 1 ply of glass fiber chopped strand mat and 3 plies of glass fiber 0/90 ° as the fiber reinforced plastic skin 8a of the soundproof portion 2. Next, as the core material 9, a light weight wood having a density of 0.3 is arranged, and as the fiber reinforced plastic skin 8b on the other side, 3 plies of glass fiber 0/90 ° woven fabric and 1 ply of glass fiber chopped strand mat are similarly used. The resin was impregnated with a hand lay-up molding method.

  Furthermore, the mounting portion 3 has two square steel pipes having a cross-sectional dimension of 150 mm × 150 mm, a thickness of 1.6 mm, and a length of 1.6 m as the insert member 12, and the distance between the centers of the square steel pipes is 500 mm. After the arrangement, a glass fiber chopped strand mat 1 ply, a glass fiber 0/90 ° woven fabric 2 ply, and a glass fiber chopped strand mat 1 ply were overlaid and laminated in this order so as to cover the square steel pipe. .

  As the matrix resin, an unsaturated polyester resin added with 30% by weight of aluminum hydroxide as a flame retardant was used.

  The soundproof wall 1 manufactured in this way has a height H = 1.6 m, a width W = 0.99 m, a thickness of the soundproof plate 27 mm, a total depth D = 160 mm of the soundproof plate and the mounting portion, and a weight of about It was 45 kg.

The obtained mounting portion 3 of the soundproof wall 1 is embedded in advance in the concrete structure 13 so as to surround the upright joining member 5, and then the concrete 4 containing aggregate is filled in the cavity of the mounting portion 3, 1 was fixed to the concrete structure 13.
Thus, by adopting the soundproof wall of the present invention, the cavity portion P of the mounting portion 3 can be sufficiently enlarged with respect to the joining member 5, and as a result, the range of the position adjustment of the soundproof wall can be increased. It was possible to install it easily. Moreover, since there is no bolt and nut fastening portion, it is no longer necessary to check the looseness of the bolt after construction. Based on the measured man-hours, the soundproof wall of the present invention, the soundproof wall using the fiber reinforced plastic described in Patent Document 2, and the PC soundproof wall made of precast concrete manufactured by the factory as a reference. When the construction costs were compared, they were as shown in Table 1 below.

  In addition, the material cost of Table 1, the installation construction cost, and the total cost represent the soundproof wall described in Patent Document 2 as 100.

本発明の防音壁は、材料費はＰＣ防音壁とほぼ同等まで削減することができ、取付工事費においても、特許文献２に記載の防音壁よりも削減することができ、材料費と取付工事費を合わせた総額においてはＰＣ防音壁と同等にすることができた。

In the soundproof wall of the present invention, the material cost can be reduced to almost the same as that of the PC soundproof wall, and the installation cost can also be reduced as compared with the soundproof wall described in Patent Document 2, and the material cost and the installation work can be reduced. The total cost was equivalent to that of PC sound barrier.

  The application of the present invention is not limited to the field of soundproof walls provided along railway lines and roads, but can be applied to general soundproofing applications.

It is the whole soundproof wall perspective view concerning one embodiment of the present invention. It is a whole perspective view which shows the example of installation of the soundproof wall which concerns on one embodiment of this invention. It is a horizontal direction sectional view which shows the internal structure of the soundproof wall of FIG. It is a horizontal direction sectional view of the soundproof wall in another embodiment of the present invention. It is a horizontal direction sectional view of the soundproof wall in another embodiment of the present invention. It is a horizontal direction sectional view of the soundproof wall in another embodiment of the present invention. It is a horizontal direction sectional view of the soundproof wall in another embodiment of the present invention. It is a horizontal direction sectional view of the soundproof wall in another embodiment of the present invention. It is a horizontal direction sectional view of the soundproof wall in another embodiment of the present invention. It is a horizontal direction sectional view of the soundproof wall in another embodiment of the present invention. It is a horizontal direction sectional view of the soundproof wall in another embodiment of the present invention. It is a horizontal direction sectional view of the soundproof wall in another embodiment of the present invention. It is the whole perspective view (A) and horizontal sectional view (B) which show the retaining structure of the attachment part inner surface of the soundproof wall which concerns on one embodiment of this invention. It is the whole perspective view (A) and horizontal sectional view (B) which show the retaining mechanism of the attachment part inner surface of the soundproof wall in another embodiment of this invention. It is a whole perspective view which shows the retaining mechanism of the attachment part inner surface of the soundproof wall which concerns on one embodiment of this invention. It is a whole perspective view which shows the retaining mechanism of the attachment part inner surface of the soundproof wall in another embodiment of this invention. It is a whole perspective view which shows the retaining mechanism of the attachment part inner surface of the soundproof wall in another embodiment of this invention. It is a whole perspective view which shows the retaining mechanism of the attachment part inner surface of the soundproof wall in another embodiment of this invention. It is a whole perspective view which shows the retaining mechanism of the attachment part inner surface of the soundproof wall in another embodiment of this invention. It is a whole perspective view which shows the retaining mechanism of the attachment part inner surface of the soundproof wall in another embodiment of this invention. It is a whole perspective view which shows the retaining mechanism of the attachment part inner surface of the soundproof wall in another embodiment of this invention. It is a whole perspective view which shows the fixing method of the soundproof wall which concerns on one embodiment of this invention. It is a whole perspective view which shows the fixing method of the soundproof wall in another embodiment of this invention.

Explanation of symbols

1: Soundproof wall 2: Soundproof plate 3: Mounting portion P: Cavity portion 4: Concrete 5: Joining member 6: Single plate 7: Rib 8a, 8b: Skin material 9: Core material 10: Web 11: Mounting frame 12: Insert member 13: Concrete structure 14: Protrusion 15: Recess 16a, 16b: Connecting member 17: Concrete reinforcing bar 18: Post-construction anchor 19: Bolt 20: Covering material S1: Horizontal cross-sectional area vertically above the inner surface of the mounting portion S2: Horizontal cross-sectional area vertically below the inner surface of the mounting part

Claims (8)

In a soundproof wall made of fiber reinforced plastic, having a soundproof plate and a soundproof plate mounting portion, the soundproof plate mounting portion is provided on the inner side and / or outer side of the soundproof plate, and the inside A soundproof wall characterized by having a hollow portion. The soundproof wall according to claim 1, wherein an inner surface of the mounting portion is made of an inorganic material or an organic material. The soundproof wall according to claim 1, further comprising a retaining portion on an inner surface of the attachment portion. The soundproof wall according to any one of claims 1 to 3, wherein the retaining portion is selected from at least one of the following (A) to (D).
(A) Means constituted by the presence of convex portions and / or concave portions (B) There is a portion where the horizontal cross-sectional area in the upper vertical direction of the inner surface of the mounting portion is larger than the horizontal cross-sectional area in the lower vertical direction (C) Means constituted by a connecting member whose both ends are coupled to the inner surface of the mounting portion. (D) The inner surface of the mounting portion has a curved portion and / or a bent portion. Means composed A soundproofing wall comprising a soundproofing plate and a soundproofing plate comprising a fiber reinforced plastic, the soundproofing plate being provided on the inner side and / or the outer side of the soundproofing plate, and having a hollow portion therein. In the construction method, the soundproof wall is fixed by inserting the cavity into a joining member provided in a concrete structure and then filling the cavity with concrete and / or mortar. Construction method. The construction method of the soundproof wall according to claim 5, wherein a reinforcing bar for concrete is used as the joining member. The method for constructing a soundproof wall according to claim 6, wherein a reinforcing bar made of metal or fiber reinforced plastic is used as the reinforcing bar for concrete. The construction method of the soundproof wall according to any one of claims 5 to 7, wherein an anchor is used as the joining member.

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